Pre-CRS Rules

This section explains how to configure pre-CRS rules.

The custom rules that are applied before the supplied OWASP CRS are called Pre-CRS rules. For more information, see Custom Rules Examples.

To define Pre-CRS rules do the following:

1. From the Avi Load Balancer UI, navigate to Templates > WAF > WAF Policy.

2. Click Create Or Edit an existing WAF Policy.

3. Enter the required details under the Settings Tab.

4. Click the Signatures tab.

5. Under Pre-CRS rules, click Create Group.
   
   

6. Enter the Group Name. Every rule is configured within a group.

7. Click the Create Rule button. Rules are enabled by default. To disable a Rule, deselect the Enable Rule check box.

8. Enter a Name for the rule.

9. Select one of the following options:

   1. Use Policy Mode

   2. Detection.

   3. Enforcement.

   For more information on selecting modes, see Selecting a WAF Policy Mode.

10. Enter the Rule in the text box. The Rule is specified in Modsec language.